Hi Gents, i am having intermittent alarm, RF Loop test fault and degraded RX on sector -A 900. I have changed dTRUs, CDU, CXU, DXU, dTRU backplane, Y-Link cables and TX/RX cables but alarm still raising at same sector. i also installed new IDB. Can any one help me in this regards,
sweep the 2 feeder that going to cell A and but them in cell B in the rbs if its still gave u alarm rf loop at cell A that means u have problem in the cabinet if it move to cell B that means u have problem from the jumper to antenna you must trace them to see may be sweep from up on go to antenna A and another to B-OR C
Khalid, try to permut the antennas for the two sectors to see. or permut the feeders for the 2 sectors,i mean put the feedor sectorA on the antennaB and the feedor sectorB on the antennasA and tell me the result.
hI jAMIL/mAXIME, i already swaped the feeders with sector B but alarm still stays in sector A. Problem is not in antenna system but within the cabinet. Is there any issue related to E1 in this case. Thanks